KR100518163B1 - coating material that radiating an anion and a far infrared rays, manufacture coated the same - Google Patents

Abstract

The present invention is a coating agent capable of forming an inorganic coating film that is hygienically good on the surface of a metal or plastic substrate used in household goods such as general household appliances or cooking appliances, and which can emit far-infrared radiation and anion effectively acting on the human body. A composition and a molding to which the coating is applied.

The present invention is an inorganic binder prepared by mixing an alkoxysilane with a pH-adjusted water to produce an alkoxy silanol group, and then mixing and stirring a silica sol with a silane compound obtained by continuously condensation polymerization of the silanol group. Provided is a coating composition obtained by mixing 70-15 wt% of a solution with a content ratio of far-infrared radiation ceramic and anion-emitting ceramic in 2 to 15 wt% of ceramic powder consisting of 5 to 15: 1 to 3 and 8 to 15 wt% of pigment.

Description

Coating material that radiating an anion and a far infrared rays, manufacture coated the same

The present invention is to form an inorganic ceramic film capable of emitting far-infrared radiation and anion beneficial to the human body on the surface of a metal, general ceramic or plastic substrate for producing household appliances, cooking appliances, etc., which are closely applied to daily life. It relates to a coating composition and a molded article to which the coating composition is applied.

Generally, various cooking products such as microwave ovens, roasted meat plates, pots, pans, etc., which are closely related to various eating habits, and household goods such as heaters, fans, refrigerators, irons, and building materials, and textile materials are improved. Various surface coating agents have been developed and used. In particular, in the case of cookware or household goods, acid resistance, abrasion resistance, durability, heat resistance, corrosion resistance, etc. are mainly required, and building materials and textile materials, such as antibacterial, deodorizing properties, far infrared radiation, anion generation, etc. are mainly required. These coatings are classified into fluorine-based paints, antibacterial resins, plastic paints such as oxidation coloring or inorganic enamel, depending on the intended use.

For example, in the case of cooking utensils, a self-cleaning coating composition disclosed in Korean Patent Registration No. 0368463 and a method of manufacturing a metal coating using the same, and enamel cooking utensils disclosed in Korean Patent Laid-Open Publication No. 2002-0080189 have been proposed. The disclosed coatings are focused on excellent non-stick, excellent antimicrobial, abrasion resistance, heat resistance, and the like, and are not coatings capable of emitting far infrared rays or anions that are beneficial to the human body. In addition, in the case of the enamel coating agent, since the firing temperature is a high temperature of at least 500 degrees, thermal deformation of the product may occur, and there is a weak disadvantage in impact.

In addition, such surface coating compositions that are widely used as building materials include, for example, colloidal titania, colloidal silica and hydroxide in alcohol-water media that, when cured on plastic surfaces such as polycarbonate, produce a hard, wear resistant coating. Coating compositions comprising acidic dispersions of silized silsesquioxanes have been disclosed.

Also disclosed are ultraviolet resistant silicone resin coatings having improved thermoforming and shortened required maturation periods achieved by adding Lewis acid compounds to coating compositions.

In addition, a number of techniques for applying natural minerals or far-infrared radiation materials to various household products have been proposed in a similar manner. For example, domestic patent registration No. 0354388 is a coating agent applied to building materials to combine thin film of building materials such as antibacterial, far-infrared radiation and deodorization, anion-generating ceramic new materials with resins and binders that are harmless to the human body. . In addition, Korean Patent Laid-Open No. 2002-0072253 discloses a multifunctional coating agent beneficial to the human body and fibers applied thereto.

On the other hand, since it has been found that natural minerals are generating far-infrared radiation or anions, which are beneficial to the human body, studies are being actively carried out by mixing natural minerals such as elvan and biotite with resins and applying them to various living products. For example, the far-infrared radiation ceramic disclosed in Korean Patent Application Laid-Open Nos. 98-23480 and a personal decorative article using the same are disclosed.

However, these conventional far-infrared emitters are not limited in their scope of application depending on their characteristics, or the far-infrared radiators or anion materials used have different compositions. In particular, in the human body application technology that is closely related to daily life, far-infrared radiation value or negative ion generation value is extremely insignificant, and the effect is not properly exerted, and its use range is extremely limited.

Therefore, the present invention has been proposed to solve the above problems, hygienically good on the surface of the metal or plastic substrates used in household goods such as general household appliances or cooking appliances, and effective to the human body It is an object of the present invention to provide a coating composition capable of forming an inorganic coating film capable of emitting far infrared radiation and anion and forming a molded article coated with the coating agent.

In addition, the present invention provides a coating composition and a molded article coated with the coating agent capable of relatively low temperature firing with a drying temperature of from 150 to 150 degrees and a thickness of the coating film as thin as 10 to 70 microns compared to other coating agents. There is this.

In order to achieve the above object, the present invention, by the reaction of the alkoxysilane and pH adjusted water to produce an alkoxy silanol group, after which the silica sol is mixed with the silane compound continuously condensation polymerization of the silanol group Coating composition obtained by mixing 70-90 wt% of the inorganic binder solution prepared by stirring with 2-15 wt% of ceramic powder and 8-15 wt% of a ceramic powder having a content ratio of far-infrared radiation ceramic and anion-emitting ceramic in a range of 5-15: 1-3. To provide.

In the inorganic binder solution, methyltrimethoxysilane and tetraethoxysilane are mixed at a ratio of 2: 1, and the silica sol 30-40 wt% is stirred in 60-70 wt% of the mixed solution, followed by an exothermic reaction. It is a silicon oxide sol obtained by the above-mentioned.

In addition, the ceramic powder is a material generating anion with the far-infrared radiation, for example, tourmaline, loess, chorionic mica, amethyst, raw ore, bamboo charcoal, Uranite, precious stone, obsidian, ganban stone, photonite, lava, ghost stone It is characterized by consisting of one or more charcoal selected from one or more natural stone material or algae, charcoal.

The coating agent prepared as described above is applied to a molded article such as a heating element for a heater or a blade for a fan to apply a coating, thereby exerting a beneficial effect on the human body.

The above objects, features and advantages will become more apparent from the following detailed description.

As the base material of the coating agent that emits far infrared rays and anions according to the present invention, an inorganic binder solution is prepared by using the silane of the following [Formula 1]. [Formula 1] RnSiXn-n where X is the same as or different from each other. , A hydrolyzable group or a hydroxyl group, the radicals R are the same as or different from each other, represent hydrogen, an alkyl group having less than 10 carbon atoms, and n is one or more silanes having 0, 1 or 2 used. sol) -gel method is used to produce alkoxy silanol groups through the net decomposition of alkoxysilanes and pH-adjusted water to produce alkoxy silanol groups, and then continuously condensation polymerization of the silanol groups (aka Prepared by mixing and stirring the silica sol). The inorganic binder solution as described above can be vaporized into large molecules by agitation of the silane compound and silica sol obtained by the second chemical reaction to express an excellent coating film function, so that it is possible to deposit the coating film thickness required for each product. . In particular, the silane compound siloxane of the present invention can be fired at a low temperature of about 150 ° C. by increasing the internal coagulation force by a chemical reaction with water having a pH adjusted. A functional coating agent is prepared by mixing various functional materials, in particular, a material capable of emitting far-infrared radiation and anions, and a pigment, in the inorganic binder solution as the base material configured as described above. The coating composition according to the present invention is a silane as described above. 70 to 90 wt% of the inorganic binder solution prepared by stirring the compound and silica sol is obtained by mixing 2 to 15 wt% of ceramic powder capable of generating far infrared rays and anions and 8 to 15 wt% of pigment. The present invention is characterized in that the coating composition having excellent coating properties as described above is applied to the surface of a metal or plastic substrate and thermally densified to form an inorganic coating film.

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On the other hand, when the anionic powder is mixed with the general coating agent and coated, the general coating agent completely covers the far infrared powder or the anion powder, thereby reducing the amount of far infrared rays or negative ions. Therefore, in the present invention, since the coating composition should be an inorganic ceramic under conditions for effectively emitting far infrared rays or anions, the inorganic powder which is the same component as the inorganic far infrared powder or anion powder is selected and used. It can be used in combination or in combination with each of the ceramic and the ceramic that emits anions.

In the functional ceramic component of the present embodiment, the far-infrared radiation ceramics and the anion-emitting ceramics are formed in a content ratio of 5 to 15: 1 to 3, wherein the anion-emitting ceramic powder is adjusted in consideration of economic efficiency and efficiency. The ceramic of the present invention as described above can be far-infrared radiation at room temperature.

More specifically, if the content of the functional ceramic, the content of the anion-emitting ceramic is too high, excess anions are released, these excess anions are likely to contain radioactive elements, there is a problem that can harm the human body, In addition, when too low, the amount of negative ions released is not able to exert negative ion efficacy. The anion content in the present invention is adjusted to a content of about 600-800ion / cc is released in consideration of commercial economics.

On the other hand, the inorganic solution which is an inorganic binder adjusted the compounding ratio in consideration of the surface state of a coating film. That is, when the inorganic binder content is 70wt% or less, the gloss and abrasion resistance of the coating film may be lowered. When the inorganic binder content is 90wt% or more, the anion ceramic particles may be buried in the binder, and the function may be degraded, or the viscosity of the coating agent may be lowered. The phenomenon of flow may appear.

In addition, ceramics for imparting antimicrobial and deodorizing functions in the composition of the present invention, for example, titanium oxide (TiO 2) or an antimicrobial ceramic containing negatives may be used in combination with the far-infrared radiation and anion-emitting ceramics, and these are far-infrared radiation And by acting as a catalyst that can cause synergy of anion release can maximize the far infrared radiation and anion release function.

In addition, in the embodiment of the present invention, in order to increase non-stickiness, 1 to 5 wt% of fluorine powder or water-soluble fluorine compound may be further added.

Hereinafter, the present invention will be described in more detail with reference to examples. These examples are only for explaining the present invention in more detail, and according to the gist of the present invention, the scope of the present invention is not limited to these examples. It will be apparent to those skilled in the art to which the present invention pertains.

First, the manufacturing process of the silicon oxide (SiO ₂ ) sol as an inorganic binder solution as a main material of the coating agent will be described.

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First, methyltrimethoxysilane and tetraethoxysilane are mixed in a ratio of 2: 1, and 30-40 wt% of silica sol is added to 60-70 wt% of the mixed mixture and stirred.

The mixed solution causes a chemical reaction in the mixing process to generate an exothermic reaction of about 40 to 50 ° C., and becomes a clear transparent solution after about 2 to 3 minutes in a turbid state during the reaction. At this time, 15-20 wt% of any one selected from methanol, ethanol, isopropanol or an alcohol mixture is added to maintain the viscosity of the solution and control the reaction rate. Injecting alcohol as described above, in addition to being able to control the viscosity and reaction rate, it also helps to maintain storage.

To the silicon oxide sol prepared as described above is added 2 to 15wt% of ceramic powder emitting far-infrared radiation and anion. In this case, the ceramic powder may use a ceramic emitting only an infrared ray and a ceramic emitting an anion together with far infrared radiation. The far-infrared radiation ceramic is made of a ceramic containing at least one selected from the group of natural minerals that emit only far-infrared rays such as quartz-monzonite, gneiss and pyloric tuff at 40 degrees Celsius.

In addition, the ceramic that generates anion together with the far-infrared radiation is, for example, tourmaline, ocher, chorionic mica, amethyst, raw ore, bamboo charcoal, Uranite, jewelry, obsidian, ganbanite, photonite, lava, precious stone selected from It consists of a material or one or more charcoal materials selected from algae and charcoal.

The content of anion powder in the far-infrared radiation and anion-emitting ceramics is controlled to a content that can release 600-800 Ion / cc in consideration of economical benefits and at the same time economically significant to the human body to determine the blending ratio.

The far-infrared emissivity and the measured value of anion of natural stone and charcoal which are ceramic materials emitting far infrared rays are shown in Table 1 below.

<Table 1> Far-infrared emissivity of natural stones and charcoal, measured anion

sample Production Far infrared ray emission rate% Negative ions-max (pcs / cc) Tourmalin Brazil 88 2,485 Ocher Korea 95 2,946 Cicada " 88 4,278 Amethyst " 81 2,152 Raw ore " 86 2,295 Bamboo charcoal " 85 2,039 Uiwang Stone Busan, Japan 86 4,434 Guiyang Stone      Gunma 96 9,451 Obsidian      Janya   753 Elvan Stone      climate 87   758 Sea algae      The three continents 91 1,695 Charcoal      Host 93 8,348 Dragon King Stone      climate 3,424 Gwangmyeongseok      Gangsan (岡山 2)   792 Lava      Sanli 96 1,341 Elvan Stone Nanjing, China 96   626 Ghost stone 87 2,274 Charcoal 82 1,748      * Anion represents the numerical value caused by the vibration of the crushed product.

In particular, in order to increase the amount of anions generated in the ceramic powder emitting the far-infrared radiation and anions, strontium, vanadium, zirconium, cerium, neodymium, lanthanum, barium, rubidium, cesium, gallium, praseodymium, uranium, and radium are selected. One hitore mineral can be blended.

Table 2 below shows a component analysis table of ore containing heat and ash elements.

<Table 2>

Component Unit (ppm) Strontium (Sr) 167 Vanadium (V) 25.95 Zirconium (Zr) 44.7 Ce (Ce) 68.42 Neodymium (Nd) 36.28 Lanthanum (La) 37.68 Barium (Ba) 63.3 Rubidium (Rb) 200 Cesium (Cs) 51.26 Gallium (Ga) 12.75

The above-mentioned natural earth natural stone is mixed with far-infrared and anion-emitting ceramic powder in a 1 to 80 weight ratio.

Table 3 below shows the component analysis table of the anion powder containing the hot earth and the ash element.

<Table 3>

ingredient wt% LA ₂ O ₃ 4.10 CeO ₂ 8.00 ZrO ₂ 55.00 Nd 4.20 Pr 1.20 Al ₂ O ₃ 1.00 SiO ₂ 22.44 P ₂ O ₅ 3.20 Fe ₂ O ₃ 0.26 1Gloss 0.60 system 100

Measuring organization: Far-infrared evaluation center in Korea Building Materials Testing Institute

Issue Number: FIA- 478 / 2002.11.02

Test Result: Anion 30410 Ion / cc

The particle size of the ceramic powder made of the above material is adjusted to 1-50 μm and added according to the purpose of use as shown in the following <Table 4>, wherein additives and inorganic pigments are further added to improve the functionality of the ceramic. Input.

<Table 4>

                                                                unit ; weight%

number Mineral solution Far Infrared Ceramic Anion ceramic Inorganic Pigments and Additives One 82 7 One 10 2 82 4 4 10 3 82 One 7 10

In the coating agent of the present invention, the mixture is added to the inorganic binder solution, the far-infrared radiation and anion-emitting ceramic powder is stirred well first and then put into a homogenizer (Homogenizer) to allow the particles to homogenize while stirring for about 30 minutes at high speed, about 325 Use filtered particles through a mesh of ～ 1000 mesh.

The inorganic coating film prepared as described above is applied to the surface of the general household goods, an example thereof will be described as follows.

First, the substrate (a substrate such as aluminum, iron, acrylic plastic product, etc.) is washed, and the coating solution of the present invention is applied to the surface of the cleaned substrate by spraying. In this case, the coating thickness is 30 μm, and the coating thickness can be maintained by the coating property of the inorganic binder solution. After the coating agent is applied, it is dried at about 160 to 180 ° C. for 20 to 30 minutes. After complete curing, the hardness is 7H or more, the cross-cut test is 100/100, and the salt spray test is performed for 1000 hours or more. A functional coating film without damage is formed.

Table 5 shows physical property test data of the coating agent according to the present invention.

Item Coating property Glossy (60 degrees) 50 to 60 Pencil Hardness (Repeat 5 times with measuring instrument) 7-9H Cross cut 100/100 Impact resistance (1/2 x 500 g x 50 cm) clear Pollution resistance (removed with alcohol after 24 hours with black, blue and red oil) No abnormality (swelling, discoloration, peeling, elution) Chemical resistance 5% Hcl No abnormality (swelling, discoloration, peeling, elution) 5% H ₂ SO ₄ 5% acetic acid 5% alkali Solvent resistance (Acetone, Toluene, MEK, IPA 1000 hours each) No abnormality (swelling, discoloration, peeling, elution) Moisture resistance (50 ℃ / 98% RH x 1000 hours) No abnormality (swelling, discoloration, peeling, elution) Salt water spray resistance (1000 hours) clear Boiling water resistance (Adhesion test after 98 ℃ x 4 hours) 100/100 (swelling, discoloration, peeling, elution) Oil resistance (24 hours deposition of gear oil) No abnormality (swelling, discoloration, peeling, elution) Heat resistance 600 ℃ Cooling and heat resistance (Leave at 9 ℃ at 200 ℃ for 15 hours at -5 ℃) No abnormality (swelling, discoloration, peeling, elution) Wear resistance (less than 500mg) clear Accelerated weather resistance (Sunshine W.O.M x gloss retention after 5000 hours) No problem (No color or gloss)

Test results for the negative ion generation and far-infrared radiation effect of the coating and the general coating prepared as described above are shown in Table 6 below.

<Table 6>

Coating Type Anion Powder (Release Value Ion / cc) 1wt% 3wt% 5wt% Lacquer 154 451 650 Urethanes 98 295 470 Epoxy 110 305 510 The present invention 320 950 1630

Measuring equipment; Portable Anion Measuring Device CORECOM. INC (MODEL IT-717)

As described above, the coating agent of the present invention manufactured by the sol-gel method is applied to general household goods, for example, a heating element or a fan blade of a heater, so that a lot of odors may be generated in a home appliance and ash center. For example, you can always maintain a comfortable interior without using expensive air cleaners in basements. In addition, when the coating agent of the present invention is used in paint paint, it is relatively thin coating film to release anion sufficiently because it is used in combination with inorganic ceramic paint rather than in general paint. By suppressing breeding, you can always maintain a comfortable interior.

Next, an example in which the coating agent according to the present invention is applied to an electric heater and a fan will be described.

First, ceramic heaters and general sheath heaters are available as products. Electronic ceramic heaters have good far-infrared efficiency, but they are expensive and cannot be manufactured except for certain shapes. It can be produced in a desired shape, but there is a disadvantage that there is no far infrared effect.

In order to take advantage of the above-described electric heaters and to improve the disadvantages, the coating agent according to the present invention is used in a general sheath heater.

By applying a coating capable of emitting far-infrared radiation and anion of the present invention on the surface of the sheath heater, a functional sheath heater which is relatively inexpensive and can be manufactured in a desired shape can be manufactured.

Table 7 below shows the emissivity of the general ceramic heater and the far-infrared emissivity data of the sheath heater coated with the ceramic coating of the present invention.

Product Name Emissivity (400 degrees) Exam number Ceramic Heater (Elstein, Germany) 84.5% FIR -630 Ceramic Coating Shizuhita 83.5% FIR-631

Test organization: Far-infrared evaluation center affiliated to the Construction Materials Research Institute

Test Date: September 12, 2002

Next, the example which applied the coating agent of this invention to an electric fan is demonstrated.

In this example, the inorganic binder solution is mixed with 80 to 99 wt% of anion release and 1 to 20 wt% of far-infrared radiation ceramic powder with a size of 2 to 30 microns, and then stirred in a stirrer and stirred at least for 6 hours while heating to 35 to 40 ° C. By making the uniform dispersion so that the gloss is maintained when the product is coated.

Before applying the coating agent prepared in the above method to the fan blades, after the sending of the fan blades, removing foreign matters and washing the solvent, the coating agent is applied, and dried for 70 minutes at 70 ~ 90 degrees to complete the coating do. By applying the coating of the present invention to the fan blades as described above, it is possible to comfort the room at all times by maintaining a certain level of negative ion concentration in the room, away from the simple function of generating the existing fan.

As described above, according to the present invention, a coating agent obtained by mixing far-infrared radiation and anion-emitting ceramics and pigments in an inorganic binder solution having excellent coating properties and low temperature firing by using a sol-gel method is used as a general household appliance such as a fan. When applied to heaters, etc., it has excellent antibacterial and deodorizing properties, and can maximize the effect of far-infrared radiation and anion.

In addition, the present invention has a beneficial effect on the human body as a surface coating agent, and thus has other effects that can be applied not only to general household goods, but also to building materials and textiles.

Claims (13)

70-90 wt% of an inorganic binder solution prepared by mixing and stirring a silica sol to a silane compound in which the alkoxysilane reacts with a pH-adjusted water to produce an alkoxy silanol group, and then continuously condensation-polymerizes the silanol group. The coating composition obtained by mixing 2-15 weight% of ceramic powders and pigments 8-15 weight% which consist of 5-15: 1-3 of content ratio of a far-infrared radiation ceramic and an anion emitting ceramic to%. The method of claim 1, The inorganic binder solution is a coating agent comprising a silicon oxide sol prepared by stirring a silica sol 30 to 40wt% to 60 to 70wt% of a silane compound in which methyltrimethoxysilane and tetraethoxysilane are mixed 2: 1 Composition. The method of claim 2, The silicon oxide sol is a coating composition, characterized in that 15 to 20wt% of at least one selected from methanol, ethanol, isopropanol or alcohol mixture in order to maintain the viscosity and control the reaction rate. The method of claim 1, Coating composition, characterized in that further added to the inorganic binder solution titanium oxide for imparting antibacterial and deodorizing function. The method of claim 1, Coating composition, characterized in that 1 to 5wt% of fluorine powder or fluorine compound is further added to increase the non-stick to the inorganic binder solution. delete The method according to any one of claims 1 to 5, The ceramic powder is a coating composition, characterized in that to use particles filtered through a sieve of 325 to 1000 mesh. The method according to any one of claims 1 to 5, Coating composition, characterized in that the particle size of the far-infrared radiation ceramic and anion-emitting ceramic is 1 ~ 50㎛. The method according to any one of claims 1 to 5, The ceramic powder Coating composition, characterized in that made of at least one material selected from the group consisting of ferrite, charcoal, tourmaline in order to give an electromagnetic shielding function. The method according to any one of claims 1 to 5, The ceramic powder is made of one or more materials selected from the group consisting of tourmaline, germanium, biotite, amethyst, raw ore, bamboo charcoal, Uranite, jewelry, obsidian, elvan, loess, photonite, lava, and gemstone. Coating composition. The method according to any one of claims 1 to 5, The anion powder component of the ceramic powder is made of one or more materials selected from the group consisting of strontium, vanadium, zirconium, cerium, neodymium, lanthanum, barium, rubidium, cesium, gallium, praseodymium, uranium, and radium, which are the elements Coating composition to be. A molding which emits far infrared radiation and anions to which the coating prepared according to any one of claims 1 to 5 is applied. The method of claim 12, The molding to emit far-infrared radiation and anion, characterized in that the molding is made of any one of a heating element for a heater or a blade for a fan.